[Haskell-cafe] a Char->Char function?

[Galchin Vasili]

Hello,

    I am writing a function(actually much more than this):

bozo :: Char -> Char
bozo 0x02 = 'a'
...

However, I get complaints from ghc suggesting that I should add an "instance
declaration (Num, Char). I (mistaking) thought I understood the Haskell
class hierarchy and the associated constraints .. but apparently not .. =>
help please. Should

Kind regards, Vasya
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